As part of the unveiling of Android 4.2 yesterday, Google introduced a brand-new input method on the stock Android keyboard called "Gesture Typing." Basically, it's Swype. If you don't know what Swype is, check out this video. Basically, you drag your finger to type instead of tapping. Here's Google's version in action:
While I'm not a fan of the Swype-style typing, a lot of people do seem to love it, and it's cool that Google is now providing a tertiary input method (alongside normal typing and voice typing) on the stock keyboard. It integrates seamlessly, too. There's nothing to turn on, nothing to toggle - it just works.